K18 Leave-In Molecular Repair Hair Mask - 1.7 oz / 50 mL
K18

K18 Leave-In Molecular Repair Hair Mask - 1.7 oz / 50 mL

$68.75
/
Shipping calculated at checkout.

The K18 Leave-In Molecular Repair Hair Mask is a 4-minute leave-in treatment that clinically reverses damage from bleach, color, chemical services, and heat for all hair types. Powered by the proprietary K18PEPTIDE, it rebuilds hair at the molecular level to restore strength, softness, smoothness, and bounce.

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  • Backordered, shipping soon
  • Powered by K18PEPTIDE™ — biotech-developed peptide that repairs hair at the molecular level
  • Clinically reverses damage from bleach, color, chemical services, and heat in just 4 minutes
  • Leave-in formula — no rinse required; use for first 4–6 washes, then as needed
  • Restores hair strength, softness, smoothness, and bounce with immediate + progressive results
  • Suitable for all hair types — universal molecular repair
  • Vegan, cruelty-free, and color-safe formula
  • Full-size: 1.7 oz / 50 mL

Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, SH-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol

  • Shampoo hair thoroughly — do not condition before applying K18.
  • Towel-dry hair until damp but no longer dripping.
  • Dispense 1 pump of mask; add more for longer or thicker hair (maximum 3 pumps).
  • Work evenly into hair from ends to roots, one pump at a time.
  • Leave in for exactly 4 minutes — do not rinse out.
  • Comb and style as usual; heat protectant or styling products may be added after 4 minutes.

Free U.S. shipping on orders over $20 — $4.95 flat rate under $20 (USPS Ground Advantage, 2–5 business days). Orders placed before 2:00 PM PT ship the same day.

Unopened, sealed items may be returned within 30 days of delivery. See our Shipping Policy and Refund Policy for full details.

  • Free U.S. shipping on orders over $20
  • Same-day shipping on orders before 2:00 PM PT

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